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Jian Ge, University of Florida

A Global Network for Planet Detection and Asteroseismology Study using Extremely high Precision Extrasolar Planet Tracker Instruments. Jian Ge, University of Florida. Australia ?. Hawaii ?. Chile ?. Global Extremely High Precision Exoplanet Tracker Network. Spain SET, 11?. USA

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Jian Ge, University of Florida

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  1. A Global Network for Planet Detection and Asteroseismology Study using Extremely high Precision Extrasolar Planet Tracker Instruments Jian Ge, University of Florida

  2. Australia ? Hawaii ? Chile ? Global Extremely High Precision Exoplanet Tracker Network Spain SET, 11? USA EXPERT, Sept. 09 China LiJET, May 10 • Offer continuous high precision radial velocity measurements for V<8 FGK stars with 0.5-1 m/s Doppler precision in 30 min • Follow up planet candidates from SDSS-III MARVELS planet survey • Compact and low cost design (~$750K per instrument including hardware and labor)

  3. High Precision RV Mode Prism Echelle 4kx4k CCD Collimator-camera Slit Output 1 Output 2 Fiber input Michelson Interferometer • A combination of a fixed-delay interferometer with a high throughput cross-dispersed echelle spectrograph with R=18,000 • A simultaneous wavelength coverage of 0.39-0.70 m • 0.5-1 m/s in 30 min for V< 8 solar type stars with 2 m telescopes 3

  4. Primary targets for EXPERT network Photon limited RV precision in 30 min exposures with EXPERT Magnitude RV precision V=6 0.4 m/s V=7 0.6 m/s V=8 1.0 m/s

  5. Detection of Earth-like short period planets with 1 m/s Doppler precision Credit: S. Kane • 2 Earth mass planet, 2.2 day period around a solar type star, K= 1m/s • = 1m/s, 60 measurements, clear detection with 0.1% FAP • Need good orbital phase coverage to eliminate other noises

  6. Opt-mechanical layout of EXPERT Thermal enclosure Pressure controlled chamber Interferometer Echelle Input fiber feed Prism 4kx4k CCD camera Collimator/camera • The thermal enclosure dimension: 69" x 45" x 39.9". • Temperature and pressure controlled

  7. EXPERT hardware setup at Kitt Peak 2.1m in Sept. 2009 EXPERT inside a 2.1m Coude room EXPERT control chassis

  8. EXPERT inside a Thermally Controlled Chamber at Kitt Peak in Sept. 2009 Thermal enclosure Chamber Interferometer RV input fiber Echelle DEM input fiber Prism Collimator/Camera 4kx4k CCD Pressure sensor

  9. Solar Spectra on the Detector with EXPERT Order 29, 0.70 m Output 2 Order 52, 0.39 m Order 29, 0.70 m Output 1 Order 52, 0.39 m

  10. Early RV measurement results with EXPERT Observations with Iodine absorption Observations with sky Photon error =1.3m/s with 12 orders combined Photon error =1.2m/s with 12 orders combined Observations with 51 Peg Photon error =4.7m/s with 9 orders combined

  11. Cross-dispersed echelle spectra of NSV 860 (K2 EB, V=8.7) in Jan. 10 R=27,000 Order 52, 0.39 m Order 20, 1.0 m

  12. RV Drifts vs. Pressure and Temperature variation with EXPERT in Oct. 2009 RV vs Pressure RV Pressure RV vs Temperature RV Temperature • Need to control pressure and temperature to reach higher RV stability

  13. EXPERT Instrument Temperature Monitoring in Dec. 2009 • Instrument temperature varies within 10 mK over 5 days

  14. EXPERT Instrument RV Monitoring in Mar. 2010 RV vs pressure in 4 days RV vs temperature in 4 days 12 mk 50 m/s 100 mpsi

  15. LiJET hardware setup at the UF lab in Jan. 2010 LiJET setup in the UF lab LiJET inside a 2.1m Coude room

  16. LiJET Instrument Temperature Monitoring in Mar. 2010 15 mK 3mpsi

  17. Exoplanet Tracker Network Plan • Science operation • Science operation with EXPERT at Kitt Peak in April 2010 • Science operation with LiJET at Lijiang, China in September 2010 • Complete the Spanish Exoplanet Tracker (SET) in early 2011 pending on remaining fund raising and telescope negotiation • Primary science targets • V<8 FGK main sequence stars with slow rotation and low activities for super Earth mass planet detection and characterization • Followup of MARVELS planet and brown dwarf candidates to confirm and characterize new giant planets and find additional planet companions • A few very bright solar type stars (V<5) for asteroseismology study • Future plan • Looking for more partners to complete 6 network instrument development and implementation • Raising federal, state and private funds for operating the network • Combining with up-coming space transit missions for bright stars to detect and characterize habitable rocky planets

  18. Follow up MARVELS planet candidates MARVELS planet candidate I MARVELS planet candidate II K = 207.91m/s, P = 25.43days, V = 11.0, Teff = 6106 Log(g) = 4.386, Msini = 1.9MJ K = 180.43 m/s, P= 10.35 days, V= 9.9, Teff = 4357K Log(g) = 4.7, Msini = 2.1MJ

  19. EXPERT Network Team Members Principal investigator: Jian Ge (UF) UF team members: Liang Chang, John Groot, Xiaoke Wan, Bo Zhao, Frank Varosi, Kevin Hanna, Peng Jiang, Scott Fleming, Brian Lee, Rohan Pais, Ji Wang, Liming Dou, Jian Liu, Erin Costello, Adriana Delgado-Navarro, Sandeep Reddy Bollampally, Troy Bosman, Scott Powell, Sid Schofield, Bo Ma, & Hali Jakeman EXPERT Network International Members: T. Wang (China team leader), J.L. Zhou, W.M. Yuan, H.Y. Zhou, J.M. Bai, Y.F., Fan., S.H. Gu, & E. Martin (Spanish team leader) We acknowledge support from NSF, W.M. Keck Foundation, NASA, Sloan Foundation, SDSS-III program, DoD, NSFC, UCF-UF SRI, & UF

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